Help with decorating!

[Singinginshower]

Does anyone know if there are any good apps to help with choosing paint/wallpaper?
I am thinking of something where you can 'virtually' paint your room different colours.
I have a room where I want to change 2 walls, but am having difficulty choosing contrasting colours. I am now also also wondering about wall paper as a complete change

The Dulux app lets you do this.

Have you used it? I have forgotten my password so can't upload it at present to try it. The reviews don't seem to be great

I use the Dulux app for that. I find it works for what I need, which is to see what certain colours would look like on a wall. Have you looked on Pinterest for inspiration?

I found it good for showing pretty accurately what colours look like in the light in a specific room - works better with a photo than live in the room.